Re is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye, in the wavelength range of roughly 625–740 nm. Longer wavelengths than this are called infrared, or below red and cannot be seen by the naked human eye. Red is used as one of the additive primary colors of light, complementary to cyan, in RGB color systems. Red is also one of the subtractive primary colors of RYB color space but not CMYK color space.

Trivia about red

  • This color appears on more different national flags than any other
  • Color of a lucky "letter day"
  • The wildflower called bloodroot oozes a poisonous sap of this color
  • This hair color of Elizabeth I was quite fashionable in 16th century England
  • When talking playing cards, diamonds are this color
  • Rhodium got its name because its salts are this color
  • To save energy, L.A. is changing this color traffic lights bulbs to LEDs, as on average, they're on the longest
  • Skelton or Buttons
  • If your business is losing money, you're awash in this color ink
  • In 1995 fashion magazines Elle & Vogue claimed this bright color was moving from lipstick to dresses
  • The adjective "ruddy" comes from the old English "rudig," meaning this color
  • Contrary to legend, a rose of this color may not have been a symbol of the house of Lancaster
  • Because of its hue, Mars is known as this "colorful" planet
  • If it's a circus wagon, paint it this traditional color
  • Seeing ____ herring
  • As you can probably guess, this is the featured color of the fins of the flame tetra
  • Gordon serves this color wine with all meat, though it's been called "an absurd generalization"
  • Ruby,brick,crimson
  • The comb of leghorn chickens, including Foghorn
  • If you want to count all the hairs on your head, hope you have this natural color; it has the fewest
  • When lemon juice is dropped on blue litmus paper, the paper will turn this color
  • Old masters could grind up hematite or cinnabar to make shades of this primary color
  • For its state mineral, Colorado chose rhodochrosite, which is a deep shade of this primary color
  • Litmus paper turns this color when it makes contact with an acid
  • It was the nickname of comedian Richard Skelton
  • Flashing lights of this color are the universal sign of legal prostitution in Nevada's rural areas
  • Though its name means "black pinot", Pinot noir is a wine of this color
  • If you want to stand out, you can't beat the fire-engine shade of this
  • Height: 5'11".Weight: None of your business, commoner!Hair: This color
  • It's the only color on the flag that's also mentioned in the song
  • To be "en numeros rojos" means to be in this color
  • On CNN's election map, it was the final color of Wyoming, Kansas & Alabama
  • Something of insignificant value is said not to be worth this color cent
  • The French Open tennis tournament is played on courts of this color clay
  • While limonite adds a yellowish tinge to marble, hematite adds this color
  • Traditional color of a tarboosh or fez
  • The usual color of the 19th century women's blouses inspired by Giuseppe Garibaldi
  • A person in a rage is said to "see" this color
  • Flags of both Japan & Bangladesh feature disks of this color
  • Financially, you want to avoid this color ink -- that means a deficit
  • In "Jezebel", Davis shocked New Orleans society by wearing a dress of this color to a ball
  • John Steinbeck:"The ___ Pony"
  • Although it's true that hummingbirds prefer flowers of this color, the shape of the flower is equally important
  • Enquiring minds know this is the color of the letters reading "National Enquirer" on the cover
  • Israel's national emergency medical service, Magen David Adom, is this color shield of David
  • The 2 traditional political parties are named for their colors: Blancos for white & Colorados for this color
  • At its northern end, this "colorful" sea branches into the Gulf of Suez on the west & the Gulf of Aqaba on the east
  • Before tan was added in 1949, this was the only 3-letter color in the box
  • It's the color mentioned in the song that's also one of the colors in the U.S. flag
  • Your stylist will tell you this least-refracted color on the visible spectrum looks best on TV
  • Colorful nickname of Times sportswriter Walter Smith
  • Poison ivy isn't always green; its leaves are this color in early spring, & they may turn orange in the fall
  • It's the colorful nickname of the Viking Eric, who established a colony on Greenland in 985
  • It's the color of the middle stripe on the U.S. flag
  • Oxygenated hemoglobin is this color
  • Geoffrey Beane's perfume named for this color didn't succeed, but now Giorgio is selling 1 with the same name
  • The ink businesses try to avoid
  • Standard color of a radio flyer
  • If you're rubicund, you're ruddy, or this color
  • In Spanish:Rojo
  • 25 Down:"The ____ Skelton Show"(3)
  • Communist
  • Nickname of oil field firefighter Paul Adair
  • A mature Rome beauty apple has skin of this color
  • On an NHL rink, it's the color of the center line
  • The world's most popular whiskey is this color Johnnie Walker
  • A 1998 WWII flim:"The Thin ____ Line"
  • Tom Clancy's first 2 novels had this color in their titles
  • When farmers of the 1800s learned this color absorbed sunlight well, it became quite popular for barns
  • It's the traditional color of London's double-decker buses
  • If you know what this state's name means, you'll know that the "C" on its flag is this color
  • Color of the balloon in the title of the classic 1956 children's film
  • It was the colorful nickname of oil field firefighter Paul Adair
  • Galactic light's "shift" toward this color of the visible spectrum shows that the universe is expanding
  • Visine:"Gets the ____ out"
  • Bruce Willis & Morgan Freeman are retired assassins in this "colorful" spy drama
  • Tom Clancy: "___ Storm Rising"
  • The drink known as "Code" this is "everything you love about Mountain Dew with a smooth cherry flavor"
  • The final film in Krzysztof Kieslowski's trilogy that began with “Blue” & “White”
  • As an epitaph, poet Hilaire Belloc wrote, "His sins were scarlet, but his books were" this
  • The second horseman, who symbolizes war & bloodshed, rides a horse of this color
  • (Jon of the Clue Crew delivers a thorny proposition from the Arizona-Sonora Desert Museum in Tucson, AZ.) Fortunes were made harvesting the prickly pear for this color dye, not from the plant, but from an insect on it that secrets caminic acid
  • This color "shift", a change observed in spectral lines, gives astronomers like Ted a good idea of galactic motion
  • Snooker is played with 15 balls of this color & 6 balls of other colors
  • "___ Sonja"
  • In Washington, D.C.: Vermeer's "Girl with" this color "Hat"
  • When scratched against a surface, hematite leaves this color streak